222121021112 has 8 divisors (see below), whose sum is σ = 416476914600. Its totient is φ = 111060510552.

The previous prime is 222121021103. The next prime is 222121021151. The reversal of 222121021112 is 211120121222.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13882563812 + ... + 13882563827.

It is an arithmetic number, because the mean of its divisors is an integer number (52059614325).

Almost surely, 2^222121021112 is an apocalyptic number.

It is an amenable number.

222121021112 is a deficient number, since it is larger than the sum of its proper divisors (194355893488).

222121021112 is a wasteful number, since it uses less digits than its factorization.

222121021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27765127645 (or 27765127641 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 222121021112 its reverse (211120121222), we get a palindrome (433241142334).

The spelling of 222121021112 in words is "two hundred twenty-two billion, one hundred twenty-one million, twenty-one thousand, one hundred twelve".